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General Specifi cations
Table 2 – Burner Specifi cations
Capacity
LB & LC
Firing rate 0.40 – 1.35 GPH
Input 56,000 – 189,000 Btu
LD & LF
Firing rate 1.10 - 1.75 GPH
Input 154,000 – 245,000 Btu/h
Fuels
U. S No. 1 or No. 2 heating oil only
Canada No. 1 stove oil or No. 2
Electrical
Power supply 120 volts AC, 60 Hz,
Operating load 5.8 Amps max
Motor 1/7 hp, 3450 rpm, NEMA 48M
Ignition Continuous duty solid-state
igniter
Fuel pump
Outlet pressure ...... Note 1
Air tube
ATC code .......See Table 3
Dimen-
Height (maximum) 12-1/2 inches
sions
Width (maximum) 15 inches
(with
Depth ............ 9-1/4 inches
cover)
Air tube diameter 3-1/4 inches
Note 1. See appliance manufacturer's burner specifi ca-
tions for recommended outlet pressure.
Table 3 – Air Tube Combination (ATC)
codes
Firing rate
Head
(gph)
(min-max)
0.40-1.35
9-Slot
0.40-1.35
6-Slot
1.10-1.75
9-Slot
1.10-1.75
6-Slot
WM 550-141-996/1105
RWB 6104WMNX R1005
...........(ASTM D396)
.........furnace oil only
.............single phase
frame PSC rotation CCW
when facing shaft end
ATC codes for usable air tube
lengths:
5"
7"
NX50LB
NX70LB
NX90LB
NX50LC
NX70LC
NX90LC
NX50LD
NX70LD
NX90LD
NX50LF
NX70LF
NX90LF
!
This equipment must be installed, adjusted and put into
operation only by a qualified individual or service agency
that is:
Licensed or certified to install and provide technical
service to oil heating systems.
Experienced with all applicable codes, standards and
ordinances
Responsible for the correct installation and
commission of this equipment
Skilled in the adjustment of oil burners using
combustion test instruments.
The installation must strictly comply with all applicable
codes, authorities having jurisdiction and the latest
revision of the National Fire Protection Association
Standard for the Installation of Oil-Burning Equipment,
NFPA 31 (or CSA B139 and B140 in Canada).
Regulation by these authorities take precedence over the
general instructions provided in this installation manual.
Read and understand the manual
supplied with this equipment. Incorrect
installation, adjustment, and use of
•
Certifi cations/approvals
Underwriters Laboratories has certifi ed this burner
to comply with ANSI/UL 296 and has listed it for
use with #1 or #2 fuel oil as specifi ed in ASTM
D396. Low sulfur #1 and #2 fuel oils reduce heat
9"
exchanger deposits with all burners compared to
the standard fuels. Reduced deposits extend the
service interval for cleaning and improve the effi -
ciency of the appliance over time. Low sulfur fuels
reduce particulate and oxides of nitrogen emis-
sions as well. The Oilheat Manufacturers' Associa-
tion recommends these fuels as the preferred fuels
for this burner.
General Specifi cations
Warning–Professional
Service Required
this burner may result in
severe personal injury
death, or substantial
property damage from
fire, carbon monoxide
poisoning, soot or
explosion.
S105
Page 5
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